PatchTheCVECVE-2020-27159: Addressed remote code execution vulnerability in DsdkProxy.php due to insufficient sanitization and insufficie
CVE-2020-27159 is a critical-severity flaw (CVSS 9.8) affecting my cloud firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Addressed remote code execution vulnerability in DsdkProxy.php due to insufficient sanitization and insufficient validation of user input in Western Digital My Cloud NAS devices prior to 5.04.114
Why this priority
- Critical severity
- EPSS top 6%: very likely to be exploited
- Public exploit reference
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 6.2% (top 6%) |
| CISA exploited list | No |
| Weakness | CWE-78 |
| Published | 2020-10-27 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2020-27159?
my cloud firmware: upgrade to 5.04.114. Exact commands for each OS are on this page.
Is CVE-2020-27159 being exploited?
CVE-2020-27159 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2020-27159 affect?
CVE-2020-27159 affects my cloud firmware. Severity is critical (CVSS 9.8). Addressed remote code execution vulnerability in DsdkProxy.php due to insufficient sanitization and insufficient validation of user input in Western Digital My Cloud NAS devices prior to 5.04.114
How urgent is CVE-2020-27159?
Priority 68/100. Critical severity; EPSS top 6%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action
Software pages
PHP vulnerabilities · Western Digital vulnerabilities
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